Question

1. use the image provided. which two angles when added together equal the measurement of ∠8? a. ∠1+∠4 b. ∠7+∠4 c. ∠9+∠7 d. ∠9+∠4

Explanation:

Step1: Recall exterior - angle property

The exterior - angle of a triangle is equal to the sum of the two non - adjacent interior angles. In the given triangle, ∠8 is an exterior angle and ∠4 and ∠9 are the non - adjacent interior angles.

Step2: Identify the correct sum

By the exterior - angle property, ∠8=∠4 + ∠9.

Answer:

D. ∠9+∠4